Bush or liner for casks and means for attaching same.



m. 754,703; PATENTED MAR. 15,1904. 1. ROSSA; A. w. MACKENZIE.

BUSH 0R LINER FOR GASKS AND- MEANS FOR ATTA-OHING-SAME nrmcnmn rmzn1.41.19. mos.

10, 10min.

I UNITED STAT-Es "Patented March 15, 1904."

PATENT OFFICE.

JAMES ROSS AND ALEXANDER WOODCOCK MACKENZIE, OF EDINBURGH, SCOTLAND.

BUSH OR LINER FOR CASKS AND'MEANS FOR ATTACHING SAME.

SPECIFICATION forming part of Letters Patent No. 754,708, dated March15, 1904.

Application filed March 19, 1903.

To all whom it may concern:

Be it known that we, JAMES Ross and ALEX- ANDER WooDoooK MACKENZIE,S11bjects of the King of Great Britain, residing at Edinburgh, Scotland, haveinvented certain new and useful Improvements in Bushes or Liners forCasks and in Means for Attaching the Same; and We do hereby declare thefollowing to be a full, clear, and exact description of theinvention,such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to improvements in bushes or liners for casks andto means for in-, serting and securing the same in the bungholes,whereby increased grip and holding power of such bushes or liners in thestaves of the casks are attained as compared with the devices heretoforein use, and in order that the said invention may be fully understood wewill proceed to describe the same with the aid of the accompanying sheetof drawings, in which Figure 1 is aplan view of abush orlinerconstructed in accordance with our invention; Fig. 2, a side view; Fig.3, a section taken on line X X of Figs. 1 and 4, and Fig. 4 an underside view of same.

a is the bush or liner, made of metalsuch as malleable cast-iron, brass,or alloy, for exampleof cylindrical shape externally, but conicalinternally, as shown, and having a flange or shoulder I; at its upperpart. On the outer cylindrical surface 0 is formed a tapered or spiralscrew-thread d, which, startingfrom nothing at or near the lower edge eof the bush, increases regularly in height as measured perpendicularlyto the cylindrical surface 0 as it winds round the bush and approachesthe flange b, at which or shortly before reaching which the saidscrew-thread stops. The larger diameter of the conical opening throughthe bush is at the top thereof and the smaller at the bottom, as seenmost clearly in Fig. 3, in order to adapt the hole to receive the usualtapered bung or shive.

At the lower internal part of the bush are formed, preferablydiametrically opposite to each other, two vertical recesses or groovesf,

Serial No. 148,591. (No model.)

adapted to receive the projections or teeth of a suitablekey or tool bymeans of which the bush can be turned round and screwed into thebung-hole of the cask. This key or tool for screwing the bush into placemay be made in any suitable way; but a convenient construction is tomake it round and tapered, so as to fit the conical hole in the bush,and to provide its outer surface with projections or teeth to fit intothe recesses or grooves f. It may be provided with a cross-bar or othermeans of turning it and applying power to it when screwing the bush intoplace. Instead of two grooves f in the interior of the bush any othernumber may be employed, the key or tool being provided with acorresponding number of projections or teeth.

Instead of forming recesses or grooves f in the interior of the bushprojections may be formed therein, if preferred, as shown at g in Figs.1, 3, and 4:, for example, and in that case the key or tool forscrewing'the bush into place is provided with notches corresponding tothese projections instead of with projections or teeth correspondingwith the recesses or grooves f.

When employing bushes constructed as above described, the bung-holes ofthe casks are preferably formed cylindrical to correspond as nearly aspossible with the cylindrical surface 0 of the bush.

It will be understood that when the bush is being inserted and screwedinto the bung-hole the lower and least-projecting end of the taperedscrew-thread 0Z first enters the wood of the stave, and as thescrewing-in of the bush proceeds the increasing height of thescrewthread causes it to out deeper and deeper into the wood until theshoulder b is brought to bear firmly against the stave round thebunghole.

In the screwed bushes heretofore in use the external surfaces have" beentapered or conare entirely remedied by the bushes constructed as abovedescribed, because, on the one hand, the cylindrical shape of the bushholds more firmly than the tapered or conical shape, and,on the otherhand, the means above described for screwing the bushes in place enablethem to be screwed in quite firmly and securely.

We claim A bush or liner for bung-holes of casks having a cylindricalexterior and a conical interior and with the smaller diameter of thecone at the inner end of the bush, said bush being provided externallywith a taper screw-thread which starts at nothing at the inner part ofthe bush and increases in height as it winds around said cylindricalsurface and approaches the outer part of the bush, said bush beingprovided with means in its conical walls at the inner end thereof bywhich it can be screwed into place and having also a flange at its outerend, the opening in the bush extending clear through the same for thereception of the bung, said opening being of the same diameter as thesmaller diameter of the cone, substantially as described.

In witness whereof We have hereunto set our hands in presence of twowitnesses.

JAMES ROSS. ALEXANDER WOODCOCK MACKENZIE. Witnesses FRANCIS W001)RIDDELL, WILLIAM RANKINE COCKBURN.

